.sz_list{ width: 850px;  font-size: 12px; padding: 20px 0px 20px 20px;}
.sz_list img{ display: block; float: left; width: 191px; height: 145px; margin:0px 17px 20px 0px;}
.tooltip {
	display:none;
     color: white;
        background:transparent url(../img/rencai/black_arrow.png);
	       font-size:12px;
           line-height: 21px;
   	    height:94px;
	   width:170px;
	   padding:5px 10px;
}